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1 <br /> Table V-4.5.2 15 Maintenance Standards - Manufactured Media Filters I <br /> (continued) <br /> Maintenance Condition When Maintenance is Results Expected <br /> Defect When Maintenance <br /> Component Needed is Performed <br /> II <br /> its which would <br /> mulation on impede permeability <br /> Media. of the compost <br /> media. <br /> Sediment depos- <br /> SedimentAccu- depth exceeds 6-inches No sediment <br /> mutation in its in vault bottom of I <br /> Vault in first chamber. first chamber. <br /> Trash/Debris Trash and debris accumulated on Trash and debris <br /> Accumulation compost filter bed. removed from the <br /> compost filter bed. <br /> Sediment in When drain pipes, clean-outs, I <br /> DrainSediment and debris <br /> Pipes/Clean- become full with sediment and/or removed. <br /> Outs debris. <br /> Damaged Any part of the pipes that are Pipe repaired and/or <br /> Pipes crushed or damaged due to cor- replaced. <br /> rosion and/or settlement. <br /> Access Cover Cover cannot be opened; one per- Cover repaired to <br /> Damaged/Not son cannot open the cover using proper working spe- <br /> Working normal lifting pressure, cor- cifications or <br /> rosion/deformation of cover. replaced. <br /> Cracks wider than 1/2-inch or evid- Vault replaced or <br /> ence of soil particles entering the repairs made so that <br /> Vault Structure structure through the cracks, or vault meets design J <br /> Includes maintenance/inspection personnel specifications and is <br /> Cracks in Wall, determine that the vault is not struc-structurally sound. <br /> Bottom, turally sound. <br /> Damage to Vault repaired so that <br /> Frame and/or Cracks wider than 1/2-inch at the no cracks exist wider <br /> Top Slab joint of any inlet/outlet pipe or evid- than 1/4-inch at the <br /> ence of soil particles entering joint of the inlet/outlet <br /> through the cracks. pipe. <br /> Baffles corroding, cracking warp- <br /> ing, and/or showing signs of failure Baffles repaired or <br /> Baffles replaced to spe- <br /> as determined by main- cifications. 111 <br /> tenance/inspection person. <br /> it <br /> 2014 Stormwater Management Manual for Western Washington <br /> Volume V- Chapter 4-Page 854 I <br />